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Retirement Benefits and Trusteed Assets (Pension Plan - Assumptions used in Determining the PBO and Net Pension Costs) (Details) (Pension Plans, Defined Benefit [Member])
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Pension Plans, Defined Benefit [Member]
     
Assumptions Used to Determin Projected Benefit Obligations and Net Pension Costs [Line Items]      
Discount rate 4.95% 4.15% 5.00%
Rate of compensation increase 4.20% 4.20% 4.20%
Discount Rate 4.15% 5.00% 5.50%
Rate of compensation increase 4.20% 4.20% 4.00%
Expected long-term rate of return on plan assets 8.25% 8.25% 8.50%